connection_status

(PHP 4, PHP 5, PHP 7, PHP 8)

connection_status — 返回连接的状态位

说明

connection_status(): int

获得当前连接的状态位。

返回值

获得当前连接的状态位, 可以用于与 CONNECTION_XXX 定义的常量来确定连接状态。

参见

connection_aborted() - 检查客户端是否已经断开
ignore_user_abort() - 设置客户端断开连接时是否中断脚本的执行
查看连接处理了解PHP处理连接的详情。

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User Contributed Notes 4 notes

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toppi at kacke dot de ¶

18 years ago


Notice !

if you running a loop (while, foeach etc..)  you have to send something to the browser to check the status.

Example:

while(1){
    if (connection_status()!=0){
    die;
    }
}
doesnt work, if the user break/close the browser.

But a:

while(1){
    Echo "\n"; //<-- send this to the client
    if (connection_status()!=0){
    die;
    }
}
will work :)

i hope it will help some of you to safe some time :)

Toppi

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Anonymous ¶

2 years ago


As mentioned, this function returns a status bitfield to which there's a set of constants available. I don't know why those constants aren't actually listed. Although they're easy to guess, I think it's still worth listing them, it is documentation after all. This function has the ability to return integers 0 through 3 so there are 4 possible states.

The constants are as follows:

CONNECTION_NORMAL = 0
CONNECTION_ABORTED = 1
CONNECTION_TIMEOUT = 2

As a 4th state is possible and being a bitfield, this gives rise to CONNECTION_ABORTED|CONNECTION_TIMEOUT (or integer 3) can be used to check for aborted+timeout states.

down

-7

Michael ¶

17 years ago


Yes it is true. I made some experiments with that functions 'connection_abortes()'. First a source made an error, which I see. They wrote: ignore_user_abort();

But that only gives you the status of the 'Abort-Setting'.
So I try (with little hope)
  'ignore_user_abort(true);'
And as I readout the setting it has changed it...

Next I see that the script runs after I disconnect with the site. But other experiments fail. I try some things and then it
was logical after an experiment: flush() is one of the necessary things. Without those output to the client the function 
          'connection_aborted()' stays on 'false'
The Second is that you have to output something. Without that it also doesn't works.
So I now know that you have to echo something and then output the buffer. Only then 'the Script' (or the function)
'knows' that the client is disconnected.

down

-12

jorge dot hebrard at gmail dot com ¶

13 years ago


You can always send chr(0) to check if browser is still alive, that will show no output in browser page (at least in Firefox).

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官方地址：https://www.php.net/manual/en/function.connection-status.php

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connection_status

说明

返回值

参见

User Contributed Notes 4 notes